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Explain how adding aqueous NH3 to the combined AgCl-Hg2Cl2 precipitate effects the separation of the two cations.

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15y ago
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1w ago

Aqueous NH3 reacts with AgCl to form [Ag(NH3)2]+ complex ions, so adding NH3 dissolves the AgCl precipitate. However, Hg2Cl2 remains insoluble in the presence of NH3. This selective solubility allows for the separation of Ag+ and Hg2 2+ cations in the mixture.

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Q: Explain how adding aqueous NH3 to the combined AgCl - Hg2Cl2 precipitate effects the separation of the two cations?
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